When programmers talk about exceptions, they often think about failure — when things have gone wrong. But exceptions can be used to do more than that; they can be used to make code more self-documenting, easier to debug, and more expressive. In this talk, based on his book Exceptional Ruby, Avdi Grimm describes Ruby’s exception system, and how it can be used to improve our code. If you’re a Ruby developer, then your code will likely improve as a result of seeing this talk.  (I know that mine has!)